An image processing apparatus generates, from the captured image, a plurality of images, which respectively corresponds to ranges of individual subject distances. The apparatus then applies image processing to at least one of the images in accordance with an instruction to change the shooting distance and field angle of the captured image, and generates a combined image that corresponds to the changed shooting distance and field angle. The image processing is applied to at least one of the images such that the size of a primary image in the combined image after changing the shooting distance and the field angle does not change.